New posts in Decimal Expansion

Numbers of the kind $0.aaa\ldots =\frac{1}{aaa\ldots a}$

Is $\lim_{x\to\infty} (0.99999...)^x=1$?

Last digit in $\sum_{k=1}^{999}k^m$ (olympiad question)

Doesn't $0.\overline9=1$ lead to consequences like $a-0.\overline01=a$ and $2=1.\overline931415926$?

real number and decimal expansions

What is the behaviour of the first $n$ digits of ${\underbrace{99\dots99}_{n\text{ nines}}}^{\overbrace{99\dots99}^{n\text{ nines}}}$ as $n\to\infty$

Why does this pattern occur: $123456789 \times 8 + 9 = 987654321$

Why does the number $2701$ always return to $703$?

Is there a pandigital perfect power $p^k$ for any prime $p$?

Christmas Cryptarithm: "HERES+MERRY+XMAS=READER"